fix(fzf): ensure fzf_entry.pos is non-nil in on_update
#98
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problem: since a large portion of `on_update` is inside of a `vim.schedule` closure - if all input buffer text is removed quickly, fzf entries can have their `pos` field removed before the `vim.schedule` callback executes, causing an error. solution: add a check to ensure that `fzf_entry.pos` is not nil before iterating and setting extmarks fixes Bekaboo#97
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problem: since a large portion of
on_updateis inside of avim.scheduleclosure - if all input buffer text is removed quickly, fzf entries can have theirposfield removed before thevim.schedulecallback executes, causing an error. solution: add a check to ensure thatfzf_entry.posis not nil before iterating and setting extmarksfixes #97